[php] Improve the generation of anonymous objects declarations

[RealyUniqueName]

var i = 2;
var o = {hello:1, world:i}

Currently generates

$i = 2;
$o = new HxAnon(["hello" => 1, "world" => $i])

But this performs 50% faster:

$i = 2;
$o = new class($i) extends HxAnon {
  public function __construct(&$i) {
    $this->hello = 1;
    $this->world = $i;
  }
}

PS: don't forget to remove constructor declaration from php.Boot.HxAnon

[nadako]

does this also support random field adding/deleting? IIRC it has to be supported by anon object values (which is unfortunate).

[Simn]

Yeah Reflect.deleteField is a real party-pooper...

[RealyUniqueName]

does this also support random field adding/deleting?

Yes adding/deleting fields is supported.